Metal window construction



May 25 1926. 1,585,899

J; E. DENNIS METAL WINDOW CONSTRUCTION Filed Sept. 1924 Inventor Io/m Ec/w/n Den/51's lit PATENT OFFICE.

JOHN EDWIN DENNIS, OF LONDON, ONTARIO, CANADA.

METAL WINDOW CONSTRUCTION.

Application filed September 3, 1924. Serial No. 735,618.

The principal objects of the invention are, to provide a. box frame steel sash which will ensure a completelg weather proof window dispensing with necessity of weather strips and storm sash, and further to provide a sash that will operate smoothly under all conditions of weather. and temperature.

A still further object is to afford the maximum light opening and to provide a structure which will be fire proof.

The principal features of the invention consist in the novel construction of the sash and the co-operating frame structure whereby a four point weather contact is maintained between the sash and the window frame.

In the drawings, Figure 1 is a horizontal sectional view through the box frame and both of the window sash.

Figure 2 is a vertical mid-sectional view showing the meeting rails of the to and bottom sash and the construction of t e sill and bottom sash weathering.

The window sash are constructed ofa rolledsteel shape 1, T-shaped in form, the head of the T having inturned edge flanges 2. The glass 3 is suitably bedded in putty and held by the channel sections 4 which are secured by suitable screws.

A box frame 5 is made up of sheet metal, the sides 6 thereof being secured by the flanged outer plate 7.

Upon the inner side of the. box frame 5 are secured a pair of U-shaped metal strips 8 each having an inner flange 9 of greater depth than the flange 10 and the flange 10 is provided with an outwardly turned edge flange 11.

The flanges 9 of the stri s 8 engage the inner ed 0 of the web 12 of the sash bar 1 and the ead of the bottom sash A engage the flange 9 of the outer strip 8 in a sliding contact.

The flange 10 of each of the strips 8 engage the inward edge of the outer flanged edge of the member 1 and the edge flanges 11 of the strips 8 engage the inner side of the heads.

An angle strip 13 is rigidly secured to the box frame 5 and engages the outer side of the T head of the upper sash B.

It will thus be seen that both of the sash engage the window frame structure in a four point contact, that is, the outer face of the T head, the inner edge of the flange 2, the

outer ed e of the flange 11 and the inner edge of t e web of the T sash frame.

and therefore may be produced at a very moderate cost.

The weathering construction for the meeting rails of the top and bottom sash is extremely simple, consisting of a metal strip 14 which is laid along the bottom side of the web of the frame of the upper sash and bein turned, upwardly at right angles to form a ange 15 at the inward edge to engage the outer face of the head of the sash frame A. A metal strip 16 is secured to the top side of the upper rail of the lower sash, the upper flange of which is removed, and the outer edge of said strip is turned downwardly to interlock with the upturned flange 15 of the strip 14. This forms a perfect weathering for the meeting rails.

The sill construction is slmply a continuation of the strip 8, the outturned flange 11' engaging the inner face of the elongated flange 1 of the T-shaped frame structure which is minus the flange 2 used on the sides and top. This of course is necessary at the bottom of the lower sash and the top of the upper sash to allow the sash to be operated. The bottom strip 8 extends slightly above the web of the bottom rail of the lower sash and the condensation collecting upon the window glass and flowin downwardly will drip into the channel-s aped member 8 which is provided with vent o enings 17 to allow it to escape to the outsi e of the win- What I claim as my invention is 1. A sliding metal window construction, comprising a frame having a pair of metal strips each provided with flanges extendin inwardly into the window 0 ening an forming a pair of channels, an metal sash of an an larl flanged construction having flanges t ereo engaging the flanges of the frame members in an interlocking weather contact.

2. A sliding metal window construction, comprising a frame, metal strips U-shaped in cross section secured to said frame having inwardly extending flanges spaced apart, one of said flanges bein shorter than the other and havin the e thereof turned outwardly there ro an sash frames of T-shaped structure havin a flanged ed on the T head, said sash rames having t e web of the section slidably engaging the This structure is extremely simple to make longer web of the strips on the frame and the edge of the flange engaging the shorter strip with the flanged edge of the strip engaging the inner side of the head between the flange and the web and interlocking the frame strip with the sash in sliding engagement.

3. A sliding meta-l window construction, comprising a frame, metal strips secured to said frame having inwardly extending flanges spaced apart, one of said flanges being shorter than the other and havin the edge thereof turned outwardly there rom, sash frames of a T-shaped construction having the inner edges of the webs enga-gin the long flange of the aforesaid strips and the outward flange of the T head engaging the shorter flanges, the long flange of one of the metal strips slidably engaging the outer side of the head of one of the sash frames, and an an le strip secured to the window frame an slidably engaging the outer side of the head of the other sash.

4. In a sliding window construction, a metal sash formed of a T-shaped bar struc ture, the cross head of the T having flanged edges projecting therefrom and a metal frame having a plurality of flanges extending therefrom and engaging said T-shaped metal sash in a four point sliding contact, one of said contacts being effected by 'engagement with said projecting flange.

5. A sliding metal window construction, comprising a frame structure, a doubie flanged strip having a long flange and a short flange secured on said frame structure with the flanges extending inwardly, a sash formed of a metal bar of T-shaped cross section having the head engaging the short flange and the edge of the web engagin the long flange and vent holes arrange in the bottom of the double flanged strip to allow the egress of collected moismm.

6. In a metal window frame construction, a pair of sash slidably supported and each formed from a T-shaped bar, the upper sash having a meeting rail formed with an upturned flange to engage the outer and under surfaces of the T head of the lower sash.

7. In a metal window frame construction, a pair of sash slidably supported'and each formed from a T shaped bar, the upper rail of the lower sash having the upper flange of the T removed, a metal meeting strip secured to the shank portion of said T-shaped bar of the upper sash and extending therebeyond and having an upturned outer edge, a metal meeting strip secured to the shank portion of the meeting rail section of the lower sash and extending beyond the head thereof, the outer edge of said latter meeting strip being downturned, each of the flanged outer edges of said meeting strips being adapted to intermesh between the opposite flange and the adjacent portion of the sash in a weather roof manner. JOHN DWIN DENNIS. 

